ORDER OF BATTLE // October 2, 1944
Battle of Aachen
Estimated force strength by side, with confidence labels per surviving record.
Forces engaged
2 sides catalogued · combined 113,000 estimated
United States
100,000
Medium-confidence figure
Germany
13,000
Medium-confidence figure
Battle context
The Battle of Aachen, fought between 12 September and 21 October 1944, was the first major engagement on German soil during the Allied advance from the west. Aachen had been incorporated into the Siegfried Line, Germany's principal defensive network along its western border, making its capture both a military and symbolic objective. Allied planners anticipated a rapid seizure that would open the path toward the industrialized Ruhr basin, a strategic economic heartland whose capture could materially weaken Germany's war-making capacity. Instead, both sides sustained heavy losses — roughly 7,000 American and 5,000 German casualties — against a German force outnumbered nearly eight to one, underscoring the defensive strength of the Siegfried Line fortifications. Much of the city was destroyed in the fighting. The engagement demonstrated that the Allied advance into the German interior would not proceed quickly, foreshadowing the attritional character of the Western Front campaign through the winter of 1944–1945.
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